2018 CADILLAC CT6 air condition

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
CLIMATE CONTROLS 195
air supply and turn on the air
conditioner. If the climate control
system does not detect possible
window fogging, it returns to normal
operation. To turn Auto Defog off or
on, see“Climate and Air Quality”
under Vehicle Personalization 0170.
Ionizer : If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants; such as pollen, odors,
and dust. If the climate control
system is on and the ionizer is
enabled, the ionizer status indicator
will be lit on the climate control
display. To turn the ionizer on or off,
see “Climate and Air Quality” under
Vehicle Personalization 0170.
Rear Window Defogger
K:Press to turn the rear window
defogger on or off. The rear window
defogger only works when the engine
is running.
The rear window defogger can be set
to automatic operation. See “Climate
and Air Quality” underVehicle
Personalization 0170. When Auto Rear
Defog is selected, the rear window
defogger turns on automatically when the interior temperature is cold and
the outside temperature is about 4 °C
(40 °F) and below.
The upper grid lines on the rear
window are antenna lines and are not
intended to heat when the defogger is
activated.
The heated outside mirrors turn on
when the rear window defogger
button is on and help to clear fog or
frost from the surface of the mirrors.
Caution
Do not try to clear frost or other
material from the inside of the
front windshield and rear window
with a razor blade or anything else
that is sharp. This may damage the
rear window defogger grid and
affect the radio's ability to pick up
stations clearly. The repairs would
not be covered by the vehicle
warranty.
Driver and Passenger Heated and
Ventilated Seats (If Equipped) :
Press
Ior+to heat the driver or
passenger seatback only.
Press
Jorzto heat the driver or
passenger seat cushion and seatback.
Press
Cor{to ventilate the driver
or passenger seat. See Heated and
Ventilated Front Seats 072.
Remote Start Climate Control
Operation : If equipped with the
remote start feature, the climate
control system may run when the
vehicle is started remotely. The system
uses the driver’s previous settings to
heat or cool the inside of the vehicle.
The rear defog may come on during
remote start based on cold ambient
conditions. The rear defog indicator
light does not come on during a
remote start.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
CLIMATE CONTROLS 197
Automatic Climate Control System (Quad Zone -
Gasoline Only)
The climate control buttons on the center stack and on the climate control
display are used to adjust the heating, cooling, and ventilation.
Center Stack Climate Controls
1. Driver and Passenger Temperature Controls
2. Fan Control
3. Driver and Passenger Heated and Ventilated Seats (If Equipped)
4. Rear Window Defogger 5. Defrost
6. OFF (Fan)
7. Recirculation
8. AUTO (Automatic Operation)
Climate Control Display
1. Outside Temperature Display
2. Driver and Passenger Temperature Controls
3. Fan Control
4. A/C (Air Conditioning)
5. Climate Control Selection (Application Tray Button)
6. SYNC (Synchronized Temperature)
7. Driver and Passenger Air Delivery Mode Controls
8. Defog

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
198 CLIMATE CONTROLS
9. Ionizer Status Indicator (IfEquipped)
Climate Control Display
The fan, air delivery mode, air
conditioning, driver and passenger
temperatures, and SYNC settings can
be controlled by touching CLIMATE
on the infotainment Home Page or the
climate button in the climate control
display application tray. A selection
can then be made on the front climate
control page displayed. See the
infotainment manual.
Climate Control Status DisplayThe climate control status display
appears briefly when the climate
control buttons on the center stack
are adjusted.
Automatic Operation
The system automatically controls the
fan speed, air delivery, air
conditioning, and recirculation in
order to heat or cool the vehicle to the
desired temperature.
When the indicator light is on or
AUTO is displayed on the climate
control display, the system is in full
automatic operation. If the air delivery
mode or fan setting is manually
adjusted, the auto indicator turns off
and the display will show the selected
settings. Auto operation can be turned
off individually for climate settings.
For automatic operation: 1. Press AUTO.
2. Set the temperature. Allow the system time to stabilize. Then
adjust the temperature as needed
for best comfort. To improve fuel efficiency and to cool
the vehicle faster, recirculation may be
automatically selected in warm
weather. The recirculation light will
not come on in AUTO mode. Press
@to select recirculation; press it
again to select outside air.
English units can be changed to
metric units through the instrument
cluster. See “Cluster Options Menu ”or
“Cluster Menu ”under Instrument
Cluster (Base Level) 0127 or
Instrument Cluster (Uplevel) 0130.
OFF : Press to turn the fan on or off.
The temperature control and air
delivery mode can still be adjusted.
Q/R: The temperature can be
adjusted separately for the driver and
the passenger. Press to increase or
decrease the temperature. Press and
hold to rapidly increase or decrease
the temperature.
The driver and passenger
temperatures can also be adjusted by
touching the controls on the climate
control display.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
CLIMATE CONTROLS 199
SYNC :Touch SYNC on the climate
control display to link all climate zone
settings to the driver settings. When
all climate zone settings are linked,
the SYNC indicator will be lit. Adjust
the driver side temperature control to
change the linked temperature. When
the front or rear passenger settings
are adjusted, the SYNC indicator will
turn off.
Manual Operation
Q 9 R:Press or touch the fan
buttons on the center stack or climate
control display, to increase or decrease
the fan speed. Press and hold the
buttons to adjust speed more quickly.
The fan speed setting displays.
Pressing either button cancels
automatic fan control and the fan can
be controlled manually. Press AUTO to
return to automatic operation.
Driver and Passenger Air Delivery
Mode Controls : When the climate
information is displayed, touch the
desired air delivery mode on the
climate control display to change the
direction of the airflow. The selected
air delivery mode button is lit.
Touching any of the air delivery buttons cancels automatic air delivery
control and the direction of the
airf low can be controlled manually.
Press AUTO to return to automatic
operation.
To change the current mode, select
one of the following:
Y:
Air is directed to the instrument
panel outlets.
\: Air is divided between the
instrument panel outlets and the floor
outlets.
[: Air is directed to the floor
outlets. Some air Is directed to the
windshield.
-: Clears the windows of fog or
moisture. Air is directed to the
windshield and floor outlets.
0: Clears the windshield of fog or
frost more quickly. Air is directed to
the windshield. Press
0to turn on or
off. Changing the air delivery mode
also turns the defrost off.
A/C : Touch A/C on the climate
control display to turn the automatic
air conditioning on or off. If the fan is turned off or the outside temperature
falls below freezing, the air
conditioner will not run.
Press AUTO to return to automatic
operation and the air conditioner runs
as needed.
Automatic Air Recirculation :
When
the AUTO indicator light is on, the air
is automatically recirculated as
needed to help quickly cool the inside
of the vehicle.
The climate control system may have
a sensor to detect air pollution. When
using automatic air recirculation, the
air quality control system may
operate. To adjust the sensitivity of
the air quality sensor, see “Climate
and Air Quality” underVehicle
Personalization 0170.
@:Press to alternate between
recirculating air inside the vehicle or
pulling in outside air. The indicator
light on the button is lit when
recirculation mode is active. This
helps to quickly cool the air inside the
vehicle or reduce the outside air and
odors that might enter.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
200 CLIMATE CONTROLS
Pressing this button cancels automatic
recirculation. Press AUTO to return to
automatic operation; recirculation
runs automatically as needed.
Manual recirculation mode is not
available when in Defrost or Defog
modes.
Auto Defog :The climate control
system may have a sensor to
automatically detect high humidity
inside the vehicle. When high
humidity is detected, the climate
control system may adjust to outside
air supply and turn on the air
conditioner. If the climate control
system does not detect possible
window fogging, it returns to normal
operation. To turn Auto Defog off or
on, see “Climate and Air Quality”
under Vehicle Personalization 0170.
Ionizer : If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants such as pollen, odors,
and dust. If the climate control
system is on and the ionizer is
enabled, the ionizer status indicator
will be lit on the climate control display. To turn the ionizer on or off,
see
“Climate and Air Quality” under
Vehicle Personalization 0170.
Rear Window Defogger
K:Press to turn the rear window
defogger on or off.
The rear window defogger can be set
to automatic operation. See “Climate
and Air Quality” underVehicle
Personalization 0170. When Auto Rear
Defog is selected, the rear window
defogger turns on automatically when
the interior temperature is cold and
the outside temperature is about 4 °C
(40 °F) and below.
The upper grid lines on the rear
window are antenna lines and are not
intended to heat when the defogger is
activated.
The heated outside mirrors turn on
when the rear window defogger
button is on and help to clear fog or
frost from the surface of the mirrors.
Caution
Do not try to clear frost or other
material from the inside of the
front windshield and rear window
with a razor blade or anything else
that is sharp. This may damage the
rear window defogger grid and
affect the radio's ability to pick up
stations clearly. The repairs would
not be covered by the vehicle
warranty.
Driver and Passenger Heated and
Ventilated Seats (If Equipped) :
Press
Ior+to heat the driver or
passenger seatback only.
Press
Jorzto heat the driver or
passenger seat cushion and seatback.
Press
Cor{to ventilate the driver
or passenger seat. See Heated and
Ventilated Front Seats 072.
Remote Start Climate Control
Operation : If equipped with the
remote start feature, the climate
control system may run when the
vehicle is started remotely. The system

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
CLIMATE CONTROLS 201
uses the driver’s previous settings to
heat or cool the inside of the vehicle.
The rear window defogger may come
on during remote start based on cold
ambient conditions. The rear window
defogger indicator light does not come
on during a remote start.
If equipped, the heated seats will turn
on if it is cold outside or the
ventilated seats will turn on if it is hot
outside. The heated and ventilated
seat indicator lights may not come on
during a remote start. If equipped, the
heated steering wheel will come on in
a remote start if it is cold outside. The
heated steering wheel indicator light
may not come on.
SeeRemote Vehicle Start 042 and
Heated and Ventilated Front Seats 072.Sensor
The solar sensor, on top of the
instrument panel near the windshield,
monitors the solar heat.
The climate control system uses the
sensor information to adjust the
temperature, fan speed, recirculation,
and air delivery mode for best
comfort.
If the sensor is covered, the automatic
climate control system may not work
properly.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
204 CLIMATE CONTROLS
.Clear snow off the hood to
improve visibility and help
decrease moisture drawn into the
vehicle.
. Keep the path under the front
seats clear of objects to help
circulate the air inside of the
vehicle more effectively.
. Use of non-GM approved hood
deflectors can adversely affect the
performance of the system. Check
with your dealer before adding
equipment to the outside of the
vehicle.
. Do not attach any devices to the
air vent slats. This restricts airflow
and may cause damage to the air
vents.Maintenance
Passenger Compartment
Air Filter
The filter reduces dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle. The
filter should be replaced as part of
routine scheduled maintenance. See
Maintenance Schedule 0390.
See your dealer regarding replacement
of the filter.
Service
All vehicles have a label underhood
that identifies the refrigerant used in
the vehicle. The refrigerant system
should only be serviced by trained and
certified technicians. The air
conditioning evaporator should never
be repaired or replaced by one from a
salvage vehicle. It should only be
replaced by a new evaporator to
ensure proper and safe operation.
During service, all refrigerants should
be reclaimed with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to the
environment and may also create
unsafe conditions based on inhalation,
combustion, frostbite, or other
health-based concerns.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
212 DRIVING AND OPERATING
.Allow greater following distance
and watch for slippery spots. Icy
patches can occur on otherwise
clear roads in shaded areas. The
surface of a curve or an overpass
can remain icy when the
surrounding roads are clear. Avoid
sudden steering maneuvers and
braking while on ice.
. Turn off cruise control.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby. If possible,
use Roadside Service. See Roadside
Service 0411. To get help and keep
everyone in the vehicle safe:
. Turn on the hazard warning
flashers.
. Tie a red cloth to an outside
mirror.
{Warning
Snow can trap engine exhaust
under the vehicle. This may cause
exhaust gases to get inside. Engine
exhaust contains carbon monoxide
(CO), which cannot be seen or
smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:
. Clear snow from the base of
the vehicle, especially any
blocking the exhaust pipe.
. Open a window about 5 cm
(2 in) on the vehicle side that
is away from the wind, to
bring in fresh air.
. Fully open the air outlets on
or under the instrument
panel.
. Adjust the climate control
system to circulate the air
inside the vehicle and set the
fan speed to the highest
setting. See “Climate Control
Systems.”
(Continued)
Warning (Continued)
For more information about CO, see
Engine Exhaust0230.
To save fuel, run the engine for short
periods to warm the vehicle and then
shut the engine off and partially close
the window. Moving about to keep
warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle speed.
This keeps the battery charged to
restart the vehicle and to signal for
help with the headlamps. Do this as
little as possible, to save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels
to free the vehicle when stuck in sand,
mud, ice, or snow.
If stuck too severely for the traction
system to free the vehicle, turn the
traction system off and use the
rocking method. See Traction Control/
Electronic Stability Control 0239.